Carriage-gear



(No Model.)

W. H. EMOND. CARRIAGE GEAR.

No, 574,313, A Patented Dec. 29, 1896.

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UNITED STATES PATE T OFFICE.

WVILLIAM H. EMOND, OF BOSTON, MASSACHUSETTS.

CARRIAG E-G EAR.

SPECIFICATION forming part of Letters Patent No. 574,313, dated December29, 1896.

Application fil d November 17, 1894-.- Serial No. 529,121. (No model.)

To all whom it may concern.-

Be it known that I, WILLIAM H. EMOND, a citizen of the United States,residing at Boston, in the county of Suffolk and State of Massachusetts,have invented a new and useful Improvement in Carriage-Gears, of whichthe following, taken in connection with the accompanying drawings, is aspecification.

My invention relates to carriages, and more particularly to that classof carriage that has four Wheels, the forward wheels and axle swinginghorizontally on a vertical pivot.

The objects of my invention are, first, to dispense with thesafety-brace and the absolute necessity for a kin g-bolt; second, toplace the turning-center back of the forward axle; third, to provide asafety-clamp between the turning-center and head-block, and, fourth, toprovide an adjustable, strong, and antirattling bearing or gear. Iattain these objects by the mechanism illustrated in the accompanyingdrawings, in which Figure 1 is a top plan of the gear. Figf 2 is a frontelevation of the same, showing forward axle, head-block, and spring.Fig. 3 is a bottom plan of the same, showing safetyplate. Fig. 4 is abottom plan of the gear with concealed portions shown by dotted lines.Fig. 5 is a side elevation in part section of the device. Fig. 6 is abottom plan of the same with safety clamp-plate removed. Fig. 7 is plansand sections of the several parts.

Similar letters in the several figures of the drawings designate likeparts, referring to whicha is the upper plate of the gear, havingreach-plates d, to which are secured the reaches of the gear and to thefront of which is bolted the head-block e.

b is the movable plate of the gear, and is secured to the forward axle fby means of clamps g. It is also provided with a thimble 1), designed toengage in a socket in the upper plate ct at m, and is secured by a boltwhich passes vertically through the thimblejoint thus formed.

0 is the lower or safety plate, which is bolted to plate a under plateI) and forms a clamp between the head-block e and turningcenter m. It isheld in justed by bolts 71 n.

cl are the reach-plates of the gear. These reach-plates are a part ofplate a, and to them are bolted the carriage-reaches.

When adjusted, plates a and c are stationary.

Plate 5, carrying with it the forward wheels and axle, to which it issecured, turns upon the pivot made by the thimble p, and for greatersecurity a bolt passes vertically through the thimble-joint m. This boltis not essential, however, and may be altogether omitted.

The wearing-surface of this gear is between the under face of plate aand the upper face of plate I). The upper face of the safety clamp-platec is covered with rubber, which position and is adin turn is coveredwith a thin plate of steel.

The elasticity of the rubber makes it possible to tighten the gear fromtime to time, so as to avoid all possibility of rattling.

By means-of this device I dispense with th e safety-brace and reduce theimportance of the king-bolt. I do, in fact, use abolt at the turning-oenter which corresponds with a kingbolt, but it is simply as anadditional precaution and item of strength. It is not actually necessaryto the successful operation of the gear and may be altogether dispensedwith, while in the old construction the king-bolt is of vitalimportance, it being necessary, first, as a turning-center, and, second,as a means of holding the gear together.

The safety-clamp,located between the turning-center and head-block, isof the greatest importance, as it provides a strong and durable means ofsecuring the gear together independent of the turning-center itself and,to gether with the thimble-joint, makes a most effective construction.By using the safetyclamp too we have a most convenient method ofadjusting the gear and overcoming any tendency to rattle consequent uponthe'wearing of the bearing-surfaces.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is j 1. In a carriage-gear, the upper bearingplateprovided with one or more reach-sockalso provided with a light rearwardextension for engagingthe king-bolt nut atthe turning-center, all asshown and described.

In testimony whereof I have signed my name to this specification, in thepresence of two subscribing witnesses, on this 15th day of November, A.D. 1894:.

VILLIAM II. EMOND.

\Vitnesses:

SETH P. SMITH, FREDERIO W. Buss.

